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jjones at danrj.com
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 Posted: Thu Jun 05, 2008 8:10 pm Post subject: [asterisk-users] PoE budget |
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On Jun 5, 2008, at 5:08 PM, Bill Michaelson wrote:
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I'm considering using a PoE switch like this...
http://www.tigerdirect.com/applications/SearchTools/item-
details.asp?EdpNo=3023334&CatId=2800
...to power as many as 24 Polycom phones of varied kinds.
The sales lit indicates >190 watts available for PoE devices. But
I'm concerned about a problem someone reported elsewhere...
They said...
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Is there a reason that Polycom phones do not support PoE classes?
We ran into a scenario recently where we could only power 11
Polycom 550's on a 24 port switch.
This is because the Polycoms do not announce themselves as being in
a specific PoE class, even though the phones only need 6W the
switch assumes they need as much power as possible and allocates
14.5W to each port. We have had to resort to running unsupported
firmware on the switch to get it to power 24 phones.
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Does anybody here have insight about this?
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have used many fsm7326p to power 24 phones or 726tp to power 12
phones and they work great |
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jfaubion at tx.rr.com
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| Posted: Fri Jun 06, 2008 12:31 am Post subject: [asterisk-users] PoE budget |
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| Quote: | Does anybody here have insight about this?
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We use the FS728TP in our network and the Polycom happily pulls around 6.5
watts. We haven't had any issue with them thus far and they have been in
place about 15 months so far.
John
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lists at minotaur.cc
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| Posted: Fri Jun 06, 2008 5:52 pm Post subject: [asterisk-users] PoE budget |
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| Quote: | have used many fsm7326p to power 24 phones or 726tp to power 12
phones and they work great
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On the Linksys side, we have a load of SRW-224P switches out in the wild powering 24 Snom 370s (around 7W each) off each switch.
Regards,
Chris |
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rob at hillis.dyndns.org
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| Posted: Sat Jun 07, 2008 9:51 am Post subject: [asterisk-users] PoE budget |
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Chris Bagnall wrote:
| Quote: | | Quote: | have used many fsm7326p to power 24 phones or 726tp to power 12
phones and they work great
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On the Linksys side, we have a load of SRW-224P switches out in the wild powering 24 Snom 370s (around 7W each) off each switch.
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Likewise, we sell these things by the bucket load and have no problems
powering phones from all 24 ports. |
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jjones at danrj.com
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| Posted: Sat Jun 07, 2008 6:24 pm Post subject: [asterisk-users] PoE budget |
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On Jun 7, 2008, at 9:51 AM, Rob Hillis wrote:
| Quote: | | Quote: | On the Linksys side, we have a load of SRW-224P switches out in
the wild powering 24 Snom 370s (around 7W each) off each switch.
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Likewise, we sell these things by the bucket load and have no problems
powering phones from all 24 ports.
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Just curious - have these ever gotten quieter? We installed one when
they first came out and it was WAY to loud for an office environment,
data center would be OK. |
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rob at hillis.dyndns.org
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| Posted: Sun Jun 08, 2008 3:51 am Post subject: [asterisk-users] PoE budget |
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They're not silent, but they're not deafeningly loud. I doubt you'll
ever find a silent PoE switch, since they have to supply far more power
than your average switch.
I wouldn't install one of these switches outside of a comms room if I
could avoid it - but then again, that holds true for /any/ switched network.
Jerry Jones wrote:
| Quote: | On Jun 7, 2008, at 9:51 AM, Rob Hillis wrote:
| Quote: | | Quote: | On the Linksys side, we have a load of SRW-224P switches out in
the wild powering 24 Snom 370s (around 7W each) off each switch.
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Likewise, we sell these things by the bucket load and have no problems
powering phones from all 24 ports.
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Just curious - have these ever gotten quieter? We installed one when
they first came out and it was WAY to loud for an office environment,
data center would be OK.
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digiumlist at googlema...
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| Posted: Mon Jun 09, 2008 3:18 am Post subject: [asterisk-users] PoE budget |
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well, I'm from snom, I would be interested how you measured that a snom370
takes 7 Watts  , My PoE switch tells me something below 2 Watts (1,5
Standby).
As a cheap, quit alternative for Europe, Allnet our distributor has an 8
Port Switch with 4x PoE, price is something below 100 Euros. As it's fanless
it's ideal for office spaces.
On Sat, Jun 7, 2008 at 4:51 PM, Rob Hillis <rob at hillis.dyndns.org> wrote:
| Quote: | Chris Bagnall wrote:
| Quote: | | Quote: | have used many fsm7326p to power 24 phones or 726tp to power 12
phones and they work great
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On the Linksys side, we have a load of SRW-224P switches out in the wild
|
powering 24 Snom 370s (around 7W each) off each switch.
Likewise, we sell these things by the bucket load and have no problems
powering phones from all 24 ports.
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--
---------------------------------------------------
snom technology AG
Tim Koehler
Partner Manager
tim.koehler at snom.de
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